Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | TARGET=$1 |
2 | ARCH=$2 | |
3 | SMP=$3 | |
4 | CC=$4 | |
5 | ||
6 | # If compile.h exists already and we don't own autoconf.h | |
7 | # (i.e. we're not the same user who did make *config), don't | |
8 | # modify compile.h | |
9 | # So "sudo make install" won't change the "compiled by <user>" | |
10 | # do "compiled by root" | |
11 | ||
12 | if [ -r $TARGET -a ! -O include/linux/autoconf.h ]; then | |
13 | echo " SKIPPED $TARGET" | |
14 | exit 0 | |
15 | fi | |
16 | ||
17 | # Do not expand names | |
18 | set -f | |
19 | ||
20 | if [ -r .version ]; then | |
21 | VERSION=`cat .version` | |
22 | else | |
23 | VERSION=0 | |
24 | echo 0 > .version | |
25 | fi | |
26 | ||
27 | ||
28 | UTS_VERSION="#$VERSION" | |
29 | if [ -n "$SMP" ] ; then UTS_VERSION="$UTS_VERSION SMP"; fi | |
30 | UTS_VERSION="$UTS_VERSION `LC_ALL=C LANG=C date`" | |
31 | ||
32 | # Truncate to maximum length | |
33 | ||
34 | UTS_LEN=64 | |
35 | UTS_TRUNCATE="sed -e s/\(.\{1,$UTS_LEN\}\).*/\1/" | |
36 | ||
37 | # Generate a temporary compile.h | |
38 | ||
39 | ( echo /\* This file is auto generated, version $VERSION \*/ | |
40 | ||
41 | echo \#define UTS_MACHINE \"$ARCH\" | |
42 | ||
43 | echo \#define UTS_VERSION \"`echo $UTS_VERSION | $UTS_TRUNCATE`\" | |
44 | ||
45 | echo \#define LINUX_COMPILE_TIME \"`LC_ALL=C LANG=C date +%T`\" | |
46 | echo \#define LINUX_COMPILE_BY \"`whoami`\" | |
47 | echo \#define LINUX_COMPILE_HOST \"`hostname | $UTS_TRUNCATE`\" | |
48 | ||
49 | if [ -x /bin/dnsdomainname ]; then | |
50 | echo \#define LINUX_COMPILE_DOMAIN \"`dnsdomainname | $UTS_TRUNCATE`\" | |
51 | elif [ -x /bin/domainname ]; then | |
52 | echo \#define LINUX_COMPILE_DOMAIN \"`domainname | $UTS_TRUNCATE`\" | |
53 | else | |
54 | echo \#define LINUX_COMPILE_DOMAIN | |
55 | fi | |
56 | ||
57 | echo \#define LINUX_COMPILER \"`$CC -v 2>&1 | tail -n 1`\" | |
58 | ) > .tmpcompile | |
59 | ||
60 | # Only replace the real compile.h if the new one is different, | |
61 | # in order to preserve the timestamp and avoid unnecessary | |
62 | # recompilations. | |
63 | # We don't consider the file changed if only the date/time changed. | |
64 | # A kernel config change will increase the generation number, thus | |
65 | # causing compile.h to be updated (including date/time) due to the | |
66 | # changed comment in the | |
67 | # first line. | |
68 | ||
69 | if [ -r $TARGET ] && \ | |
70 | grep -v 'UTS_VERSION\|LINUX_COMPILE_TIME' $TARGET > .tmpver.1 && \ | |
71 | grep -v 'UTS_VERSION\|LINUX_COMPILE_TIME' .tmpcompile > .tmpver.2 && \ | |
72 | cmp -s .tmpver.1 .tmpver.2; then | |
73 | rm -f .tmpcompile | |
74 | else | |
75 | echo " UPD $TARGET" | |
76 | mv -f .tmpcompile $TARGET | |
77 | fi | |
78 | rm -f .tmpver.1 .tmpver.2 |